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Work Breakdown Structure

Work Breakdown Structure. What is a Work Breakdown Structure (WBS)?. Breaks the project down into manageable parts Organizes the team’s work into sections

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Work Breakdown Structure

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  1. Work Breakdown Structure

  2. What is a Work Breakdown Structure (WBS)? • Breaks the project down into manageable parts • Organizes the team’s work into sections • According to The Project Management Body of Knowledge (PMBOK) it is a “deliverable oriented hierarchical decomposition of the work to be executed by the project team” • WBS defines the project by dividing it into its major subcomponents (or tasks), which are then subdivided into more detailed components, and finally into a set of activities and their related costs

  3. WBS Diagram • Are just like “To Do Lists” except more detailed • WBS decreases in size from top to bottom • Deliverable • Components • Elements • activities that create the components

  4. Example of a WBS for the construction of a house

  5. Decomposition • Level one is the deliverable or project (Construction of the house) • Level two are the components (internal, foundation, and external) • Level three are the elements or activities that create the components • Any level below level three are considered sub-deliverables (1.1.1 and 1.1.2)

  6. Who creates the work breakdown structure? • Project team • Identify the major deliverables • Subdivide those deliverables into smaller systems (sub-deliverables) • Further decomposition is done until a single person can be assigned

  7. Complete WBS for the construction of a house Notice the budget ($215,500) and work percentage (100%) The percentages(45.6%, 24%, and 30.4%) and budget ($86,000, $46,000, and $83,500) in level two add up to the total work percentage and budget The percentages are a way to determine how much work and time will be placed on an individual sub-deliverable and the budget is used for allocation of funds

  8. Another example of a WBS used for a wedding party

  9. WBS Guidelines The following guidelines should be considered when creating a work breakdown structure: • The top level represents the final deliverable or project • Sub-deliverables contain work packages that are assigned to a organization’s department or unit • All elements of the work breakdown structure don’t need to be defined to the same level • The work package defines the work, duration, and costs for the tasks required to produce the sub-deliverable • Work packages should not exceed 10 days of duration • Work packages should be independent of other work packages in the work breakdown structure • Work packages are unique and should not be duplicated across the work breakdown structure

  10. References • Heizer, J. & Render, B. (2008). Principles of Operations Management (7th ed.). Upper Saddle River, NJ: Pearson • http://www.brighthub.com/office/project-management/articles/2645.aspx • http://www.matchware.com/en/templates/wbs-template-construction-of-a-house.php • http://workbreakdownstructure.com/

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